Automatic reciprocating bolt



Filed July 8,. 1926 2 Sheets-Sheet l Stm May 17, 1927.

E. RUFF ET AL AUTOMATIC RECIPROCA'TING BOI-: T

Filed July 8, 1926 2 Sheets-#Sheet 2 @Mm/may Patented May `17, 1927.

UNITED STATES 1,628,8@8 .PATENT OFFICE.

EDWARD RUF? AND C. L. BAiILY, UF NEWARK, NW JERSEY.

AUTOMATIC `RECIPRIN?Aillfbfir BOLT.

Aptplitmtibl tiled July 8, 11926. Serial No. 121,228.

This invention relates to bolts such as 'are used for fastening doors` and the like and has speci-al reference to an automatic reciprocating bolt provided with a locking cam or latch.

(.)ne important object of the present invention is to improve the general construction of device of this character.

`A second important object of the `invention is to provide a novel .arrangement ot reciprocating bolt and latch member Wherein the latch member is automatically operated to hold the bolt securely in its closed and opened positions.

A third important object of the invention is to provide novel latch means .in such a bolt automatically controlled by the mech anism that moves the bolt itself.

A. fourth important object of the invention is to provide a bolt ot' this character having electro-magnet means for operating the bolt so arranged as to be capable of being controlled `from a distance.

With the above and other objects in view as will be hereinafter ap. arent, the invention consi. s in general o certain novel details of construction and combinations of parts hereinafter fully `described7 illustrated in the accompanying drawings `and specil'@ ically claimed.

In the accompanying` drawings like char acters of reference indicate like parts in the several views, and:

Figure 1 is a plan View voit the improved bolt.

Figure 2 is a side elevation thereof, partly broken away, and showing the bolt as applied to a door.

Figure 3 is an end view of the device.

Figures 4. 5 and 6 illustrate successive positions of the latch mechanism during the movement. of the bolt from open to closed position.

Figure 7 is a View similar to Figure Q showing the bolt fully closed.

Figure 8 is a wiring diagram ot the invention.

In the embodin'ient of the invention here shown there is provided a. bolt 10 suitably mounted in a casing 1l. At one end ot this casing is a housing l2 having side walls 13 between which extends the corresponding end ot the bolt l0. At this end the bolt is provided with a pair of spaced upstanding arms 14 and secured in, the walls 123 is a pivot pin l5 which lies between the arms 14. On this pivot pin mounted a latch member which consists ot a pair of plates 16 arranged in V-shaped relation, the apex ott' the V being carried by the pivot pin. These ,plates are of such length that upon the bolt being moved to its fully opened or fully closed position, one ot the plates will lie parallel to and rest on the bol-t with its end engaging a respective arm 14 so that the bolt cannot be moved until the latch is lifted.

ln order to lift the llatch, and move the bolt there is provided a plunger 17 of iron or the like and this plunger is mounted to slide through a pair of solenoids 18 and 19 .so that when one ot these soleuoids is energized the plunger drawn in one direction while energization of the other solenoid moves the plunger in the opposite direction. This pli'lnger has one end exteudiner over the arni provided end of the bolt and this end carries a. pin Q0 which has its extremity positioned ijietween the plates 16 at their diverging ends.

The solenoids may have their adjacent ends connected to a battery 21 by wires 22 and the remaining ends connected to wires 23 to the fixed contacts of a single pole double throw switch 24 which has .its fixed cont-.1ct connected to the battery .21.

To understand the operation we Will suppose the parts to be in the position shown in Figure 2. rTo lock the bolt the switch is moved to energize the solenoid 19.. Thereupon the pin 20 contacts with the upper plate 16 and swings it to the position shown in Figure 4. Following this the pin still moves in the same direction and passes through the positions shown in Figures 5 and (i until it reaches the position shown in Figure 7 at which time the lett hand arm 1,4 engages the apex of the plates and stops further movement. The bolt cannot now be moved backwardly because the plate 16 which is now ,in horizontal position locks the same. Obviously to open the bolt the solenoid '1S is energized and the 'reversed movement takes place.

There has thus been provided a simple and efficient device of the kind described and tor the purpose specified.

It is obvious that minor changes may be made in thc form and construction of the invention without departing trom the material spirit thereof. It is not, therefore. desired to confine the invention to the exactform herein shown and described, but itis desired to include all such as properly come within the scope claimed.

Havingthus described the invention, what is claimed as new, is:

l. In a locking device, a sliding bolt having a pair of spaced arms at one end, a latch member positioned between said arms and pivoted at one of its edges to points adjacent the bolt, said latch member being tiltable to swing between positions on opposite sides of its pivotal axis and engage respective arms, an electro-magnetically controlled plunger extending parallel to the bolt, and a `finger on said plunger projecting` into the space between the arms and engaging the'latch member to tilt the same.

v2. In a locking device, a sliding bolt having a pair ot spaced arms at one end, a latch member positionedA between said arms and pivoted at one of its edges to points adjacent the bolt, said latch member being tiltable to rswing between positions on opposite sides of its pivotal axis and engage respective arms, an electro-magnetically controlled 'plunger extending parallel to the bolt, a linger on said plunger projecting into the space between the arms and engaging the latch member to tilt the same, a pair ot' solenoid coils surrounding the plunger in longitudinally spaced relation, said plunger being of magnetic material to form the core for said solenoids, and means for selectively energizing said solenoids.

In a locking device, a sliding bolt having at one end a pair ot spaced arms extending at right angles to the bolt trom the same side thereof, a housing at the arm provided end of the bolt having walls on each side thereof, a latch member having a pair of plates in V-shaped` relation, said plates boing pivoted to said walls at the apex oi the l V and each being of such length as to engage a respective arm upon movement on the tending at right angles to the holt from the f saine side thereof, a housing at the arm provided end of the. bolt having walls on .ach side thereof, a latch memberliaving a pair of plates in V-shaped relation, said plates being pivoted to said walls at the apex ot the V and each being of such length as to engage a respective arm upon movement on the pivot to position parallel to the boli` a plunger mounted for longitudinal movement parallel to the bolt, a linger carried by one end of the plunger and projecting into the space between the divergent ends ot the plates, and means to reciprocate the plunger.

In a locking device, a sliding bolt haring at one end a pair oli spaced arms extending at ight angles to the holt 'trom Vthe same side thereof, a housing ai the arm provided end ot the bolt having` Awalls on each side tlu-nfeo'l", a latch member having` a pair ot' plates in V-shaped relation, said plates` beingpivoted to said walls at the apex ol' the V and each being ol' such length as lo engage a respective arm upon movement on the pivot to position parallel to the bolt. a plunger mounted. for longitudinal movement pa 'allel to the bolt, a linger carried by one. end o't the. plunger and projecting into the space between the. divergent endsl ot the platesv` said plunger being` ot niagnctic-materiah a pair oi solenoid coils .surrounding said plunger and spaced longitudinally thereot` and means tor .selectively energizing the coils.

In testn'nony whereof we allix our signatures.

EDVA Rl) R U Fl?. ELMER C. L. BAILEY.

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